Weighing scale



FIG. 1 is a top perspective view of the design;

FIG. 2 is a top plan view of the design;

FIG. 3 is a bottom plan view of the design;

FIGS. 4 and 5 are front and rear views of the design;

FIGS. 6 and 7 are left and right side views of the design; and,

FIGS. 8 to 14 are the corresponding views of the design with the weighing scale equipped with the plate. 

The ornamental design for a weighing scale, as shown and described. 